Flagged Emails and Planner Tasks get Duplicated

Malcolm FraserI believe I am seeing the same thing as of this week.

I have recurring tasks that I add to My Day.  When I check off the task, it briefly goes away and then returns.  The second time I mark it complete, it goes away completely.

Reviewing the tasks in Outlook, it only shows one instance of the task being completed.

Update: I switched to marking the items completed using the Outlook interface.  It also marks the item completely briefly, and then resurrects the task.  The second time it is completed, it stays completed.  However, the task lists only shows a single instance of it being completed.